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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Cebus cf. apella exhibits rapid acquisition of complex stimulus relations and emergent performance by exclusion

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Ana Leda de Faria Brino ; Ana Paula Bemerguy Assumpção ; Rodolfo da Silva Campos ; Olavo de Faria Galvão ; William J. McIlvane
Total Authors: 5
Document type: Journal article
Source: Psychology & Neuroscience; v. 3, n. 2, p. 209-215, Dez. 2010.

A "second generation" matching-to-sample procedure that minimizes past sources of artifacts involves (1) successive discrimination between sample stimuli, (2) stimulus displays ranging from four to 16 comparisons, (3) variable stimulus locations to avoid unwanted stimulus-location control, and (4) high accuracy levels (e.g., 90% correct on a 16-choice task in which chance accuracy is 6%). Examples of behavioral engineering with experienced capuchin monkeys included four-choice matching problems with video images of monkeys with substantially above-chance matching in a single session and 90% matching within six sessions. Exclusion performance was demonstrated by interspersing non-identical sample-comparison pairs within a baseline of a nine-comparison identity-matching-to-sample procedure with pictures as stimuli. The test for exclusion presented the newly "mapped" stimulus in a situation in which exclusion was not possible. Degradation of matching between physically non-identical forms occurred while baseline identity accuracy was sustained at high levels, thus confirming that Cebus cf. apella is capable of exclusion. Additionally, exclusion performance when baseline matching relations involved non-identical stimuli was shown. (AU)

FAPESP's process: 08/57705-8 - Institute for the Study of Behavior, Cognition and Teaching
Grantee:Deisy das Graças de Souza
Support type: Research Projects - Thematic Grants